EP0356791B1 - Système d'entraînement, en particulier pour les installations d'essuie-glace de véhicule automobile - Google Patents

Système d'entraînement, en particulier pour les installations d'essuie-glace de véhicule automobile Download PDF

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Publication number
EP0356791B1
EP0356791B1 EP89114903A EP89114903A EP0356791B1 EP 0356791 B1 EP0356791 B1 EP 0356791B1 EP 89114903 A EP89114903 A EP 89114903A EP 89114903 A EP89114903 A EP 89114903A EP 0356791 B1 EP0356791 B1 EP 0356791B1
Authority
EP
European Patent Office
Prior art keywords
carbon brush
motor
drive mechanism
speed
mechanism according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89114903A
Other languages
German (de)
English (en)
Other versions
EP0356791A1 (fr
Inventor
Werner Gakenholz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SWF Auto Electric GmbH
Original Assignee
SWF Auto Electric GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SWF Auto Electric GmbH filed Critical SWF Auto Electric GmbH
Publication of EP0356791A1 publication Critical patent/EP0356791A1/fr
Application granted granted Critical
Publication of EP0356791B1 publication Critical patent/EP0356791B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
    • B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
    • H02K23/02—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting
    • H02K23/20—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting having additional brushes spaced intermediately of the main brushes on the commutator, e.g. cross-field machines, metadynes, amplidynes or other armature-reaction excited machines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
    • H02K23/66—Structural association with auxiliary electric devices influencing the characteristic of, or controlling, the machine, e.g. with impedances or switches
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S318/00—Electricity: motive power systems
    • Y10S318/02—Windshield wiper controls

Definitions

  • the invention relates to a drive which is provided in particular for windshield wiper systems on motor vehicles and has the features from the preamble of claim 1.
  • the windshield wiper systems of modern motor vehicles are mainly driven by a permanent magnet DC motor that can be operated at two different speed levels.
  • a total of three grinding brushes are provided for setting the two different speed levels, two of which lie essentially diametrically opposite one another on the collector.
  • One of these grinding brushes is connected to the ground pole of a voltage source.
  • the other of these two brushes is connected to the positive pole of the voltage source if the DC motor is to be operated at low speed in the first speed stage.
  • the third abrasive brush lies against the collector between the first and the second abrasive brush by a certain angle, which is generally not greater than 90 °, with respect to the abrasive brush of the first speed level that can be connected to the positive pole.
  • the third grinding brush is connected to the positive pole of a voltage source instead of the second grinding brush (see, for example, EP-A-0 076 206).
  • a wiping position is also known, in which the DC motor can be operated in three different speed levels.
  • two further grinding brushes are arranged on one side of the neutral zone, which is defined by the connecting line of the two grinding brushes connected to the voltage source at the lowest speed, so that a total of three grinding brushes selectively with the positive pole of the Voltage source are connectable.
  • the invention has for its object to design a drive of the type mentioned so that a torque of the DC motor is obtained with simple means in the speed step with the higher speed, which is at least approximately as large or larger than the torque in the speed step with the smaller Speed is.
  • the third and fourth grinding brushes are offset to different degrees from the second grinding brush.
  • the offset will expediently be made at most so large that the trailing edge of the third grinding brush is offset to the same extent as the trailing edge of the fourth grinding brush.
  • the third and fourth grinding brush are offset by the same angle with respect to the second grinding brush. If the sliding conditions between the second brush and the collector and between the third and fourth brush and the collector are largely the same, symmetry with respect to the second grinding brush is obtained even with the same angular offset of the third and fourth grinding brush.
  • the tightening torque can be increased to a desired value, e.g. can be set to the value of the lower speed level. In addition, this can influence equalizing currents between the third and fourth grinding brush.
  • either the third or the fourth grinding brush can be switched off automatically when the DC motor is blocked in the second speed stage with the higher speed.
  • a switchable, in particular thermally triggerable, switching element is connected upstream of the grinding brush that can be switched off.
  • the third and fourth grinding brushes can also be connected directly to one another.
  • the third and fourth grinding brushes can be narrower in the circumferential direction of the collector than the first and second sanding brush.
  • the DC motor can be operated in more than two speed levels, then for each additional speed level there are advantageously two more on the collector on opposite sides of the connecting line between the first and second grinding brush, offset by a different angle than the third and fourth grinding brush with respect to the second grinding brush Grinding brushes are available, which can be connected in parallel and together to the voltage source.
  • the drives include a direct current motor 10, of which the collector 11 is indicated in the figures, on the circumferential surface of which the grinding brushes 12, 13, 14 and 15 in the embodiments according to FIGS. 1 to 4 and in the embodiment according to FIG. 5 in addition, the brushes 16 and 17 rest.
  • the magnet 18 indicates that the DC motor 10 is a permanently excited motor.
  • the motor 10 can be operated in several speed levels.
  • An operating switch 20 with a movable contact bridge 21, which can be electrically conductively connected via an ignition switch 19 to the positive pole 22 of a voltage source 23, the other pole 24 of which is the ground pole, is used to control the motor 10 and to select a speed stage.
  • the grinding brush 12 is permanently and unchangeably connected to the ground pole 24. If the operating switch, starting from the switch-off position shown, is switched to the first operating switch position denoted by I, then with the pull switch closed, positive potential is applied to the grinding brush 13 via the movable contact bridge 21 and a line 30, which is diametrical with respect to the collector 11 of the grinding brush 12 opposite.
  • the connecting line between the grinding brushes 12 and 13 is shown in dash-dotted lines and bears the reference number 31. If the DC motor 10 is controlled via the second grinding brush 13, the armature of the DC motor 10 rotates at the lowest speed level.
  • the grinding brush 14 is offset from the grinding brush 13 by an angle a1 between the two grinding brushes 12 and 13.
  • the two grinding brushes 14 and 15 are connected via feed lines 32 and 33 to the same fixed contact 34 of the operating switch 20.
  • the two grinding brushes 14 and 15 are connected in parallel to one another and together to the positive pole 22 of the voltage source 23.
  • the armature of the DC motor 10 then rotates at a higher speed than in the speed level I.
  • the selected arrangement of the grinding brushes 14 and 15 and their common control ensures that the tightening torque of the DC motor 10 is greater in this higher speed level than in the lower one Speed level.
  • the two angles a1 and a2 are so different that the trailing edges of the brushes 14 and 15 when the collector rotates in the direction of arrow A are equidistant from the brush 13.
  • the grinding brushes 14 and 15 are directly connected to one another via their feed lines 32 and 33, in the embodiment according to FIG. 2 an electrical component 40 with a low electrical resistance is looped into the feed line to the grinding brush 15. With this component 40, the tightening torque of the DC motor 10 in the speed stage II can be set. In addition, equalizing currents between the brushes 14 and 15 can be influenced. Otherwise, the angles 1 and 2 are the same size in the embodiment according to FIG. 2. This completely symmetrical arrangement of the grinding brushes 14 and 15 with respect to the connecting line 31 is particularly advantageous when the DC motor 10 can be driven in both directions of rotation.
  • thermal switch 41 could also be located in the feed line 32 to the grinding brush 14.
  • the lower current through the two grinding brushes 14 and 15 also makes it possible to make them narrower than the grinding brushes 12 and 13 in the circumferential direction of the collector 11, as has been done in the embodiment according to FIG. 4. This has an advantageous effect on the commutation of the current out.
  • the DC motor 10 of the drive of a windshield wiper system shown in FIG. 5 can be operated in three speed stages.
  • it has two further brushes 16 and 17, which also lie on opposite sides of the connecting line 31 between the two grinding brushes 12 and 13 on the collector and are offset by a larger angle with respect to the grinding brush 13 than the grinding brushes 14 and 15.
  • the two brushes 16 and 17 are jointly connected to an additional fixed contact 44 of the operating switch 20, which now has three operating switching positions. If the movable contact bridge 21 of the operating switch 20 is switched to the fixed contact 44 when the ignition switch 19 is switched on, the two grinding brushes 16 and 17 are connected in parallel to one another and jointly to the positive pole 22 of the voltage source 23.
  • the engine 10 is then operated at a speed level III in which the speeds are higher than in speed levels I and 11.
  • the characteristic curve 50 shows the relationship between the engine speed and the torque in the speed stage I. This characteristic curve is the same for a conventional drive and for a drive according to the invention.
  • the characteristic curve 51 shows the relationship between the motor speed and the torque for the motor of a conventional drive when operating in speed level 11. It can be seen that in speed level II the idle speed is higher than in speed level I, but that the tightening torque has become lower is.
  • the characteristic curve 52 shows the relationship between the engine speed and the engine torque for a direct current motor of a drive according to the invention operated in the speed stage II with two grinding brushes connected to the positive pole of the voltage source in this speed stage. It can be seen that the tightening torque of the motor in speed stage II is now higher than in speed stage I.
  • the characteristic curve 53 shows the current / torque relationship for the operation of a conventional or a DC motor according to the invention when operating in speed stage I.
  • the characteristic curve 54 relates to the current / torque relationship of a conventional DC motor when operating in stage 11, and the characteristic curve 55 on the current / torque relationship of a DC motor according to the invention in the speed stage 11. It can be seen that the current drawn by a DC motor of a drive according to the invention in the speed stage II is only slightly larger than the current which flows through the DC motor of a conventional drive when operating in speed level II.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Direct Current Motors (AREA)
  • Dc Machiner (AREA)
  • Motor Or Generator Current Collectors (AREA)

Claims (10)

1. Entraînement, notamment pour des systèmes essuie-glaces de véhicules automobiles, avec un moteur à courant continu (10) qui peut fonctionner à au moins deux vitesses différentes et qui est muni d'un collecteur (11), d'un premier et d'un deuxième balais frotteurs (12, 13) appliquées sensiblement diamétralement en vis-à-vis sur le collecteur (11), et d'un troisième balai frotteur (14) appliqué entre le premier et le deuxième balais frotteurs (12, 13) sur le collecteur (11) en étant décalé d'un angle donné par rapport au deuxième balai frotteur (13), le premier et le deuxième balais frotteurs (12, 13) étant raccordés à une source de tension (23) lorsque le moteur à courant continu (10) fonctionne à la première vitesse (I), et le premier et le troisième balais frotteurs (12, 14) étant raccordés à la source de tension (23) lorsque le moteur (10) fonctionne à la deuxième vitesse (II), caractérisé par un quatrième balai frotteur (15) qui, observé par rapport au troisième balai frotteur (14), est appliqué sur le collecteur (11) de l'autre côté de la ligne de jonction (31) entre le premier et le deuxième balais frotteurs (12, 13) et qui peut être raccordé à la source de tension (23) parallèlement au troisième balai frotteur (14) et conjointement avec ce dernier.
2. Entraînement selon la revendication 1, caractérisé en ce que le troisième balai frotteur (14) et le quatrième balai frotteur (15) sont décalés de valeurs différentes par rapport au deuxième balai frotteur (13).
3. Entraînement selon la revendication 2, caractérisé en ce que le décalage est au plus d'une valeur telle que le bord arrière du troisième balai frotteur (14) est décalé exactement de la même valeur par rapport au deuxième balai frotteur (13) que le bord arrière du quatrième balai frotteur (15).
4. Entraînement selon la revendication 1, caractérisé en ce que le troisième et le quatrième balais frotteurs (14, 15) sont décalés du même angle par rapport au deuxième balai frotteur (13).
5. Entraînement selon l'une des revendications 1 à 4, caractérisé en ce qu'un composant électrique (40, 41)-de faible résistance électrique est branché en amont du troisième et/ou du quatrième balai frotteur (14, 15).
6. Entraînement selon l'une des revendications 1 à 5, caractérisé en ce que soit le troisième soit le quatrième balai frotteur (14,15) peut être automatiquement déconnecté si le moteur à courant continu (10) est bloqué à la deuxième vitesse (II).
7. Entraînement selon la revendication 6, caractérisé en ce qu'un élément de commutation (41), qui peut notamment être déclenché thermiquement, est branché en série avec le balai frotteur déconnectable (15).
8. Entraînement selon l'une des revendications 1 à 4, caractérisé en ce que le troisième et le quatrième balais frotteurs (14, 15) sont directement reliés l'un à l'autre.
9. Entraînement selon l'une des revendications 1 à 8, caractérisé en ce que le troisième et le quatrième balais frotteurs (14, 15) sont, dans le sens circonférentiel du collecteur (11), plus étroits que le premier et le deuxième balais frotteurs (12, 13).
10. Entraînement selon l'une des revendications 1 à 9, caractérisé en ce que, pour une vitesse supplémentaire (III), il est prévu deux balais frotteurs supplémentaires (16, 17), qui peuvent être raccordés parallèlement et conjointement à la source de tension (23), qui sont appliqués sur le collecteur (11) sur des côtés opposés de la ligne de jonction (31) entre le premier et le deuxième balais frotteurs (12, 13) et que sont décalés par rapport au deuxième balai frotteur (13) d'un autre angle que le troisième et le quatrième balais frotteurs (14, 15).
EP89114903A 1988-08-19 1989-08-11 Système d'entraînement, en particulier pour les installations d'essuie-glace de véhicule automobile Expired - Lifetime EP0356791B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3828176A DE3828176A1 (de) 1988-08-19 1988-08-19 Antrieb, insbesondere fuer scheibenwischeranlagen an kraftfahrzeugen
DE3828176 1988-08-19

Publications (2)

Publication Number Publication Date
EP0356791A1 EP0356791A1 (fr) 1990-03-07
EP0356791B1 true EP0356791B1 (fr) 1991-01-23

Family

ID=6361183

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89114903A Expired - Lifetime EP0356791B1 (fr) 1988-08-19 1989-08-11 Système d'entraînement, en particulier pour les installations d'essuie-glace de véhicule automobile

Country Status (7)

Country Link
US (1) US5023532A (fr)
EP (1) EP0356791B1 (fr)
JP (1) JPH03500960A (fr)
BR (1) BR8907058A (fr)
DE (1) DE3828176A1 (fr)
ES (1) ES2021170B3 (fr)
WO (1) WO1990002063A1 (fr)

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US5602957A (en) * 1993-06-07 1997-02-11 General Electric Company Permanent magnet direct current motor
US5847522A (en) * 1995-11-13 1998-12-08 Gec-Marconi Aerospace Inc. Locking devices and control circuitry for permanent magnet electric motors
US5925999A (en) * 1996-11-13 1999-07-20 Siemens Canada Limited Three-speed dual-winding direct current permanent magnet motor method and apparatus
US6148470A (en) * 1998-08-14 2000-11-21 Valeo Electrical Systems, Inc. Windshield wiping system
DE10132909A1 (de) * 2001-06-26 2003-01-23 Afl Germany Electronics Gmbh Steuergerät für Gleichstrommotoren
US7017224B2 (en) * 2002-07-19 2006-03-28 Valeo Electrical Systems, Inc. Windshield wiper drive linkage arm with interior grooves
US6881373B2 (en) * 2002-07-19 2005-04-19 Valeo Electrical Systems, Inc. Windshield wiping system manufacturing method
US7059009B2 (en) * 2002-07-19 2006-06-13 Valeo Electrical Systems, Inc. Windshield wiper drive linkage arm with grooves
GB0228010D0 (en) * 2002-11-30 2003-01-08 Johnson Electric Sa End cap assembly
US7071643B2 (en) * 2004-09-21 2006-07-04 Fasco Industries, Inc. Dual speed quad brush two pole motor system
DE102006043316A1 (de) * 2006-09-15 2008-03-27 Robert Bosch Gmbh Gleichstrommotor mit Drehzahlstellung
BRPI0908554B1 (pt) * 2008-03-24 2020-03-03 Mitsuba Corporation Motor de limpador de para-brisa
WO2010001899A1 (fr) 2008-06-30 2010-01-07 株式会社ミツバ Moteur électrique
JP5112200B2 (ja) * 2008-07-10 2013-01-09 株式会社ミツバ ワイパモータ
EP2339725B1 (fr) 2008-10-07 2016-07-06 Mitsuba Corporation Moteur électrique et moteur de réduction
DE112009002473T5 (de) * 2008-11-21 2012-05-31 Asmo Co., Ltd. Motor und Bürstenanordnungsverfahren
FR2951122B1 (fr) * 2009-10-09 2014-04-25 Renault Sa Dispositif de commande d'un motoreducteur d'un systeme d'essuyage d'une vitre d'un vehicule automobile
CN104702178B (zh) * 2015-02-12 2017-12-29 洛阳市同圆电子有限公司 一种雨刷电机的控制系统
FR3084790B1 (fr) * 2018-08-01 2022-05-27 Valeo Systemes Dessuyage Moteur electrique a courant continu, moto-reducteur et systeme d'essuyage
FR3098063A1 (fr) * 2019-06-28 2021-01-01 Valeo Systèmes D’Essuyage Ensemble électrique, véhicule automobile et procédé de commande d’un moteur électrique

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Also Published As

Publication number Publication date
JPH03500960A (ja) 1991-02-28
EP0356791A1 (fr) 1990-03-07
WO1990002063A1 (fr) 1990-03-08
BR8907058A (pt) 1991-01-02
DE3828176A1 (de) 1990-02-22
US5023532A (en) 1991-06-11
ES2021170B3 (es) 1991-10-16

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